2221629 has 8 divisors (see below), whose sum is σ = 2985312. Its totient is φ = 1469520.

The previous prime is 2221589. The next prime is 2221631. The reversal of 2221629 is 9261222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221629 - 2¹⁵ = 2188861 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2221599 and 2221608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2434 + ... + 3219.

It is an arithmetic number, because the mean of its divisors is an integer number (373164).

2^2221629 is an apocalyptic number.

It is an amenable number.

2221629 is a deficient number, since it is larger than the sum of its proper divisors (763683).

2221629 is a wasteful number, since it uses less digits than its factorization.

2221629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787.

The product of its digits is 864, while the sum is 24.

The square root of 2221629 is about 1490.5129989369. The cubic root of 2221629 is about 130.4839750731.

It can be divided in two parts, 2221 and 629, that added together give a triangular number (2850 = T₇₅).

The spelling of 2221629 in words is "two million, two hundred twenty-one thousand, six hundred twenty-nine".